Linux System Administration

Tom Adelstein works as a technical analyst writer for a large international publishing company headquartered in Texas. He became a young author in 1985 and has written prolifically ever since. Tom's career began as a CPA and progressed into investment banking where he excelled by using computer technology to help his companies become industry leaders. In 1993, he decided to change careers and pursue information technology. He says he chose to follow his heart instead of his head.

If you're an experienced system administrator looking to acquire Linux skills, or a seasoned Linux user facing a new challenge, Linux System Administration offers practical knowledge for managing a complete range of Linux systems and servers. The book summarizes the steps you need to build everything from standalone SOHO hubs, web servers, and LAN servers to load-balanced clusters and servers consolidated through virtualization. Along the way, you'll learn about all of the tools you need to set up and maintain these working environments.Linux is now a standard corporate platform with users numbering in the hundreds of millions, and there is a definite shortage of talented administrators. Linux System Administration is ideal as an introduction to Linux for Unix veterans, MCSEs, and mainframe administrators, and as an advanced (and refresher) guide for existing Linux administrators who willwant to jump into the middle of the book. Inside, you'll learn how to: Set up a stand-alone Linux server Install, configure, maintain, and troubleshoot a DNS server using BIND Build an Internet server to manage sites, perform email and file transfers, and more Set up an email service for a small-to-medium-sized site, complete with authentication Install and configure Apache, PHP, and MySQL on a web server built from scratch Combine computers into a load-balanced Apache web server cluster based on the free Linux Virtual Server Set up local network services from distributed file systems to DHCP services, gateway services, print services, user management and more Use Linux virtualization with Xen or VMWare to run multiple kernels on one piece of hardware; manage each kernel's access to processor time, devices, and memory Create shell scripts and adapt them for your own needs Back up and restore data with rsync, tar, cdrecord, Amanda, and MySQL toolsLinux System Administration is not only knowledgeable and practical, but convenient. The ingredients for this book had been scattered throughout mailing lists, forums, and discussion groups, as well as books, periodicals, and the experiences of colleagues. Everything is now in one handy guide. In the course of their research, the authors also solved many problems whose solutions were completely undocumented. They now pass their lessons on to you.

For experienced system administrators looking to acquire Linux skills, and seasoned Linux users facing a new challenge, this book offers practical knowledge for managing a complete range of Linux systems and servers. It summarizes the steps you need to build everything from standalone SOHO hubs, web servers, and LAN servers to load balanced clusters and servers consolidated through virtualization. You'll also learn to back up data and create shell scripts.

InhaltsverzeichnisPreface1. Requirements for a Linux System AdministratorAbout This BookHow Can We Help?Where Do You Start?Do You Need a Book?Who Needs You?What System Managers Should Know About LinuxWhat's Next2. Setting Up a Linux Multifunction ServerServer RequirementsInstalling DebianLogging in RemotelyConfiguring the NetworkChanging the Default Debian PackagesSetting Up QuotasProviding Domain Name ServicesAdding a Relational Database: MySQLConfiguring Mail Securely with Postfix, POP3, and IMAPPutting Apache to WorkAdding FTP Services with ProFTPDSummarizing Your Web Statistics with WebalizerSynchronizing the System ClockInstalling Perl Modules Needed by SpamAssassinWhat's Next3. The Domain Name SystemDNS BasicsGetting into the BINDSetting Up a DNS ServerConfiguring an Authoritative DNS ServerEditing the Configuration FilesBIND ToolsTroubleshooting BINDWhat's Next4. An Initial Internet-Ready EnvironmentInstalling ISPConfigSetting Up a Server and Users with ISPConfigSafeguarding a Linux Web ServerWhat's Next5. MailKey Mail Service TermsPostfix, Sendmail, and Other MTAsThe Postfix SMTP Mail Server on DebianAdding Authentication and EncryptionConfiguring POP3 and IMAP Mail Delivery AgentsEmail Client ConfigurationWhat's Next6. Administering ApacheStatic and Dynamic FilesA Simple LAMP SetupInstallationApache Configuration FilesLogfilesSSL/TLS EncryptionsuEXEC SupportBenchmarkingInstalling and Administering DrupalTroubleshootingFurther Reading7. Load-Balanced ClustersLoad Balancing and High AvailabilityScaling Without LB and HAFurther Reading8. Local Network ServicesDistributed FilesystemsIntroduction to SambaConfiguring the NetworkDHCPGateway ServicesPrint ServicesUser Management9. Virtualization in the Modern EnterpriseWhy Virtualization Is PopularHigh-Performance ComputingInstalling Xen on Fedora 5Installing VMwareVirtualization: A Passing Fad?10. Scriptingbash BeginningsUseful Elements for bash ScriptsScripting Language ShootoutFurther Reading11. Backing Up DataBacking Up User Data to a Server with rsynctar ArchivesSaving Files on Optical MediaBacking Up and Archiving to Tape with AmandaBacking Up MySQL DataAppendix. bash Script SamplesIndex